Thomas Aquinas: The Basics is an engaging introduction to the theology of arguably the greatest theologian and philosopher of the Middle Ages. The sophistication and complexity of his thought can be daunting for those approaching his work for the first time. Through this lively and accessible book, Harkins provides an entry point to understanding Aquinas's mature theological thought. As well as giving an overview of Aquinas's life and written works, this book examines Aquinas's understanding of: the nature and purpose of theology; God's nature, existence, and operations; the Trinity; creation; evil; the human person, human happiness, and the virtues; Christ and salvation; and the sacraments. Including a useful glossary of key terms, this text is ideal for students and interested non-specialists seeking an understanding of the theology of Aquinas.